﻿using System;
using System.Diagnostics;
using System.Globalization;
using System.Runtime.InteropServices;
using System.ComponentModel.Design;
using Microsoft.Win32;
using Microsoft.VisualStudio;
using Microsoft.VisualStudio.Shell.Interop;
using Microsoft.VisualStudio.OLE.Interop;
using Microsoft.VisualStudio.Shell;
using NuGetConsole.Implementation;
using EnvDTE;
using System.IO;

namespace NeosSDI.VsExtension
{
    /// <summary>
    /// This is the class that implements the package exposed by this assembly.
    ///
    /// The minimum requirement for a class to be considered a valid package for Visual Studio
    /// is to implement the IVsPackage interface and register itself with the shell.
    /// This package uses the helper classes defined inside the Managed Package Framework (MPF)
    /// to do it: it derives from the Package class that provides the implementation of the 
    /// IVsPackage interface and uses the registration attributes defined in the framework to 
    /// register itself and its components with the shell.
    /// </summary>
    // This attribute tells the PkgDef creation utility (CreatePkgDef.exe) that this class is
    // a package.
    [PackageRegistration(UseManagedResourcesOnly = true)]
    // This attribute is used to register the informations needed to show the this package
    // in the Help/About dialog of Visual Studio.
    [InstalledProductRegistration("#110", "#112", "1.0", IconResourceID = 400)]
    // This attribute is needed to let the shell know that this package exposes some menus.
    [ProvideMenuResource("Menus.ctmenu", 1)]
    [Guid(GuidList.guidNeosSDI_VsExtensionPkgString)]
    [ProvideToolWindow(typeof(PowerConsoleToolWindow))]
    [ProvideAutoLoad("{f1536ef8-92ec-443c-9ed7-fdadf150da82}")]
    public sealed class NeosSDI_VsExtensionPackage : Package
    {
        PackageConsoleManager packageConsoleManager = null;
        /// <summary>
        /// Default constructor of the package.
        /// Inside this method you can place any initialization code that does not require 
        /// any Visual Studio service because at this point the package object is created but 
        /// not sited yet inside Visual Studio environment. The place to do all the other 
        /// initialization is the Initialize method.
        /// </summary>
        public NeosSDI_VsExtensionPackage()
        {
            Trace.WriteLine(string.Format(CultureInfo.CurrentCulture, "Entering constructor for: {0}", this.ToString()));
        }



        /////////////////////////////////////////////////////////////////////////////
        // Overriden Package Implementation
        #region Package Members

        /// <summary>
        /// Initialization of the package; this method is called right after the package is sited, so this is the place
        /// where you can put all the initilaization code that rely on services provided by VisualStudio.
        /// </summary>
        protected override void Initialize()
        {
            Trace.WriteLine (string.Format(CultureInfo.CurrentCulture, "Entering Initialize() of: {0}", this.ToString()));
            base.Initialize();



            // Add our command handlers for menu (commands must exist in the .vsct file)
            OleMenuCommandService mcs = GetService(typeof(IMenuCommandService)) as OleMenuCommandService;
            if ( null != mcs )
            {
            //    // Create the command for the menu item.
            //    CommandID menuCommandID = new CommandID(GuidList.guidNeosSDI_VsExtensionCmdSet, (int)PkgCmdIDList.AddScaffoldControllerCommand);
            //    MenuCommand menuItem = new MenuCommand(MenuItemCallback, menuCommandID );
            //    mcs.AddCommand( menuItem );

                // Create the command for the query status menu item.
                CommandID queryStatusCommandID = new CommandID(GuidList.guidNeosSDI_VsExtensionCmdSet, (int)PkgCmdIDList.AddScaffoldControllerCommand);
                OleMenuCommand queryStatusMenuCommand = new OleMenuCommand(MenuItemCallback, queryStatusCommandID);
                queryStatusMenuCommand.BeforeQueryStatus += new EventHandler(queryStatusMenuCommand_BeforeQueryStatus);
                mcs.AddCommand(queryStatusMenuCommand);
            }
        }

        void queryStatusMenuCommand_BeforeQueryStatus(object sender, EventArgs e)
        {
            OleMenuCommand menuCommand = sender as OleMenuCommand;
            if (menuCommand != null)
            {
                IntPtr hierarchyPtr, selectionContainerPtr;
                uint projectItemId;
                IVsMultiItemSelect mis;
                IVsMonitorSelection monitorSelection = (IVsMonitorSelection)Package.GetGlobalService(typeof(SVsShellMonitorSelection));
                monitorSelection.GetCurrentSelection(out hierarchyPtr, out projectItemId, out mis, out selectionContainerPtr);
 
                IVsHierarchy hierarchy = Marshal.GetTypedObjectForIUnknown(hierarchyPtr, typeof(IVsHierarchy)) as IVsHierarchy;
                if (hierarchy != null)
                {
                    object value;
                    hierarchy.GetProperty(projectItemId, (int)__VSHPROPID.VSHPROPID_Name, out value);

                    if (value != null && value.ToString().ToLower().Contains("controllers"))
                    {
                        menuCommand.Visible = true;
                    }
                    else
                    {
                        menuCommand.Visible = false;
                    }
                }
            }
        }
        #endregion

        /// <summary>
        /// This function is the callback used to execute a command when the a menu item is clicked.
        /// See the Initialize method to see how the menu item is associated to this function using
        /// the OleMenuCommandService service and the MenuCommand class.
        /// </summary>
        private void MenuItemCallback(object sender, EventArgs e)
        {
            var dte = (EnvDTE.DTE)GetService(typeof(EnvDTE.DTE));
            WindowCreateScaffoldController window = new WindowCreateScaffoldController();
            window.Dte = dte;
            var res= window.ShowDialog();
            if (res.HasValue && res.Value)
            {
                string command = window.Command;// "Get-Package -ListAvailable -Filter Nancy.Elmah";

                packageConsoleManager = new PackageConsoleManager(dte, this);
                packageConsoleManager.ExecuteCommand(command);

                if (window.DefineService)
                {
                    var web = GetActiveProject(dte);
                    var webPath = new FileInfo(web.FullName).DirectoryName;
                    UnityConfig.AddUnityMappingForService(web, webPath, window.ServiceName);
                }
            }

        }

        internal static Project GetActiveProject(DTE dte)
        {
            Project activeProject = null;

            Array activeSolutionProjects = dte.ActiveSolutionProjects as Array;
            if (activeSolutionProjects != null && activeSolutionProjects.Length > 0)
            {
                activeProject = activeSolutionProjects.GetValue(0) as Project;
            }

            return activeProject;
        }

    }
}
